@misc{indiciae31e31df32956,
  title = {Reconnaissance techniques for determining soil-gas radon concentrations: an example from Prince Georges County, Maryland},
  author = {G.M. Reimer},
  year = {2012},
  doi = {10.1029/gl017i006p00809},
  url = {https://pubs.usgs.gov/publication/70015728},
  note = {Source identifier: 70015728}
}